1997 SSANGYONG KORANDO brake sensor

SSANGYONG MY2002
4F-54 ABS AND TCS
DIAGNOSTIC TROUBLE CODE (DTC) 11
WHEEL SPEED SENSOR FREQUENCY ERROR
KAA4F180
Circuit Description
The toothed wheel generates a voltage pulse as it
moves past the wheel speed sensor. Each tooth-gap-
tooth series on the wheel generates the pulses. The
electronic brake control module (EBCM) uses the fre-
quency of these pulses to determine wheel speed. The
voltage generated depends on the air gap between the
wheel speed sensor and the toothed wheel, and on the
wheel speed.
Diagnosis
This DTC will set when the EBCM cannot identify which
wheel speed sensor is causing the malfunction. It is
nec-essary to check all wheel speed sensors and
associated wiring to determine the cause of the DTC.
Cause(s)
Incorrect number of teeth on the toothed wheel.
Damaged or broken teeth on the toothed wheel.
Discontinuity or short in speed wheel speed sensor
wiring.
Fail Action
Antilock brake system (ABS) action is disabled and
the ABS warning lamp is ON.Test Description
The number(s) below refer to Step(s) on the diagnostic
table.
1. This step begins the examination of the front wheel
speed sensor sensors.
3. This step checks for a problem with one of the
front toothed rings.
5. This step checks the front wheel speed sensors.
7. This step checks for shorts in a front wheel speed
sensor harness.
9. This step checks for opens in a front wheel speed
sensor harness.
11. This step begins a check of the rear wheel speed
sensors.
13. This step checks for a problem with one of the
rear toothed rings.
15. This step checks the rear wheel speed sensors.
17. This step checks for shorts in a rear wheel speed
sensor harness.
19. This step checks for opens in a rear wheel speed
sensor harness.

SSANGYONG MY2002
4F-58 ABS AND TCS
DIAGNOSTIC TROUBLE CODE (DTC) 42
ACCELERATION SENSOR FAULT
KAA4F190
Circuit Description
The acceleration sensor provides a voltage signal that
changes in relation to the acceleration of vehicle. The
signal voltage will vary from about 1.95 to 3.45 volt.
The electronic brake control module (EBCM) monitor a
signal voltage of deceleration in the vehicle.
Diagnosis
This procedure checks for a malfunctioning acceleration
sensor, a short to ground or to voltage in the wiring, or
a contact problem in a connector.
Cause
The vertical acceleration sensor is defective or dis
connected
There is a problem in the wiring
There is a problem with a connector
Wrong installed vertical acceleration sensor
Fail Action
ABS action is disabled, and the ABS warning lamp is
ON.Test Description
The number(s) below refer to step(s) on the diagnostic
table.
2. This step checks for the voltage reference from
the EBCM.
5. This step checks for the voltage signal from the
acceleration sensor.
Diagnostic Aids
Be sure that the acceleration sensor wiring is properly
routed and retained.
It is very important to perform a thorough inspection of
the wiring and the connectors carefully and completely
may result in misdiagnosis, causing part replacement
with the reappearance of the malfunction.
You can use the scan tool to monitor acceleration sensor
during a road test. Watch the acceleration sensor being
displayed on the scan tool to see if any of the reading
is unusual.

SSANGYONG MY2002
4F-60 ABS AND TCS
DIAGNOSTIC TROUBLE CODE (DTC) 43
ACCELERATION SENSOR CONTINUITY FAULT
KAA4F190
Circuit Description
The acceleration sensor provides a voltage signal that
changes in relation to the acceleration of vehicle. The
signal voltage will vary from about 1.95 to 3.45 volt.
The electronic brake control module (EBCM) monitor a
signal voltage of deceleration in the vehicle.
Diagnosis
This procedure checks for a malfunctioning acceleration
sensor, a short to ground or to voltage in the wiring, or
a contact problem in a connector.
Cause
The vertical acceleration sensor is defective or dis
connected
There is a problem in the wiring
There is a problem with a connector
Wrong installed vertical acceleration sensor
Fail Action
ABS action is disabled, and the ABS warning lamp is
ON.Test Description
The number(s) below refer to step(s) on the diagnostic
table.
2. This step checks for the voltage reference from
the EBCM.
5. This step checks for the voltage signal from the
acceleration sensor.
Diagnostic Aids
Be sure that the acceleration sensor wiring is properly
routed and retained.
It is very important to perform a thorough inspection of
the wiring and the connectors carefully and completely
may result in misdiagnosis, causing part replacement
with the reappearance of the malfunction.
You can use the scan tool to monitor acceleration sensor
during a road test. Watch the acceleration sensor being
displayed on the scan tool to see if any of the reading
is unusual.

SSANGYONG MY2002
4F-80 ABS AND TCS
DIAGNOSTIC TROUBLE CODE (DTC) 27
STOPLAMP SWITCH FAULT
KAA4F230
Circuit Description
When the brake pedal is pressed, the contacts on the
brake light switch close to illuminate the brake lights.
Battery voltage is also applied to terminal 48 of the
elec-tronic brake control module (EBCM), which signals
the ABS controller that the brakes are applied and ABS
may be needed. Without this, signals from a wheel
speed sensor that may indicate the need for ABS
intervention are questionable. When the brake pedal is
not pressed, the EBCM terminal 48 is grounded through
the stoplamps.
Diagnosis
This procedure will check whether there is no output or
constant output from the stoplamp switch and will deter-
mine the cause as a faulty switch or a problem in the
circuitry.Cause(s)
The ground connection or the positive connection
at the EBCM has failed.
There is an open, short to ground, or short to positive
in the vehicle wiring.
The stoplamp switch has failed.
Fail Action
The system records a DTC 27. ABS operation is not
dis-abled.
Test Description
The number(s) below refer to step(s) on the diagnostic
table.
12. This step begins the process of troubleshooting
stoplamps that are always on.
Diagnostic Aids
Inspect the wiring and the connectors carefully and
thoroughly. Failure to do so could result in misdiagnosis,
causing part replacement with the reappearance of the
malfunction.

SSANGYONG MY2002
4F-94 ABS AND TCS
ABS / ABD (AUTOMATIC BRAKE DIFFERENTIAL LOCK):
DIESEL - STOPLAMP SWITCH, ACCELERATION SENSOR, WHEEL SPEED SENSOR DIAGNOSIS
KAA4F290

TRANSFER CASE 5D1-3
SSANGYONG MY2002
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18Shift motor output (- High to low: Battery voltage/ - Low to high or motor brake : Ground)
Shift motor output (- Low to high: Battery voltage/ - High to Low or motor brake : Ground)
TOD output: Electromagnetic clutch control
B (+) : Fuse F17
Ignition Voltage: Fuse F23
Shift motor output (- High to low: Battery voltage/ - Low to high or motor brake : Ground)
Shift motor output (- Low to high: Battery voltage/ - High to Low or motor brake : Ground)
Reference voltage (5V) supply to Throttle Position (TP) sensor and speed sensor
Ground
Ground
B (+) : Fuse F17
Diagnosis (K-line)
Position encoder ground
Illuminate 4WD CHECK lamp
Not in used
Mode (4H/4L) input
Position encoder 2 input
Front propeller shaft speed sensor input
Not in used
Speed sensor ground. Throttle position (TP) sensor return
Illuminate 4WD LOW indicator
CAN bus high line
CAN bus low line
Neutral position sensor signal input (A/T only)
ABS operation signal (ON/OFF)
Brake switch signal input
Position encoder 1 input
Position encoder 3 input
Rear propeller shaft speed sensor signal input
Position encoder 4 input
PIN DESCRIPTION
Pin No.Description

TRANSFER CASE 5D1-5
SSANGYONG MY2002
The motor reaches its destination.
The motor is on for 5 seconds without reaching its
destination. The shift has failed and the TCCU will
respond as default mode.
A fault occurs with either the motor or position
encoder. Refer to the diagnosis requirement.
When the motor is energized, the Ignition, 4H/4L
switch, propeller shaft speeds, and transmission
neutral inputs are ignored.
Indicator Function
Once a range change has been initiated the 4WD LOW
indicator will begin to blink at a rate of 0.3 seconds
on, 0.3 seconds off until the shift is completed or
canceled. If a successful shift has been completed,
the 4WD LOW indicator will be illuminated if the motor
is in low range and it will be turned off if the motor is in
high range.
4WD LOW indicator illuminates as below figure.
KAA5D000
TODTM System Operation
The TODTM System is responsible for distributing torque
between the front and rear axles. The TCCU monitors
the propeller shaft speeds, operating range (high/low),
and ABS activity and then applies a calculated amount
of torque to the front axle by pulse width modulating
(PWM) the current applied to the electromagnetic clutch
(EMC).
Touch-off Torque
The minimum EMC duty cycle is based on the vehicle
speed and throttle position. The TCCU receives the
throttle position (TP) sensor signal from the engine con
trol module (ECM) through CAN bus line.
Wheel Slip Detection and Control
The TCCU continuously monitors the front and rear pro-
peller shaft speeds to detect wheel slip.
When wheel slip is detected the TCCU controls the
EMC duty cycles as necessary until the wheel slip is
reduced below the allowable limit. The EMC duty cycle
will then be reduced to the touch-off value.Brake/ABS Strategy
When the ABS System is active, the EMC duty cycle
is set to a fixed duty cycle (30%) to aid in braking
without counteracting the ABS System.
4L Strategy
When the system is operating in 4WD low range, the
TCCU continues TOD
TM operation provided that the pro
peller shaft speed is below 175 rpm (5220 pulses/min-
ute). When the speed increases above 175 rpm, the
EMC duty cycle is set to the maximum value (88 %)
which applies the maximum available torque to the front
axle.
Position Encoder
The position encoder is used by the TCCU to determine
the position of the shift motor. Each motor position is
identified by a position code as shown.
Motor Position
Left Stop
Left of High
High
Right of High
Zone 1
Neutral
Zone 2
Low
Right Stop Position code 1/2/3/4
1111
1010
0010
0000
1110
1001
0001
0101
0100
Notice:
All other position codes are invalid
Position input : open circuit (> 4.5V) = 1
Position input : Shorted to speed/position return
(< 0.5V) = 0
Position Sensor Interpretation
1. When the module powers up, it will read the position
sensor and the 4H/4L switch input and respond to
the possible codes as following tables.
2. A command to shift will only be acted upon if the
TCCU is reading a valid code at the time the com-
mand to shift is made.
3. After a shift has started, the TCCU will power the
shift motor until the code for the requested position
is read. If an invalid code is read, the TCCU will go
into a default mode.
4. During a shift attempt, the shift motor will be ener-
gized for a maximum of 5 second

BODY WIRING SYSTEM 9A-13
SSANGYONG MY2002
1 C351
2 S201
3 G201
4 G202
5 Auto down unit
6 HLLD switch
7 OSRV switch
8 Rear wiper & washer switch
9 C201
10 Clutch switch “A”
11 Clutch switch “B” (Gasoline E/G)
12 Stop lamp switch
13 Dimmer & passing switch
14 Turn signal,FRT fog lamp & Light switch
15 Wiper switch
16 J201
17 C202
18 Immobilizer antenna
19 Ignition switch
20 Cruise control switch
21 Key reminder switch
22 C203
23 Acceleration pedal sensor
24 Kick down switch
25 REKES
26 ADD’ (LH)
27 Diagnosis connector
28 Brake fluid switch
29 Locking hud solenoid (TCCU)
30 C116
31 Cluster “D”
32 Cluster “C”
33 Cluster “B”
34 Cluster “A”
35 J202
36 J202
37 J203
38 S203
39 4WD switch
40 Hazard switch
41 Defroster switch
42 ECS switch
43 Antenna feeder cable
44 S204
45 Audio
46 DRL unit
47 SDM
48 G204
49 C204
50 Chime Bell
51 Buzzer
52 Acceleration sensor
53 G203
54 Cigar lighter55 Central door lock relay
56 BTSI solenoid
57 A/Tsocket
58 BTSI “P” position sw
59 Mode switch
60 Shift motor
61 Speed sensor & clutch coil
62 VSS
63 C301
64 C302
65 C303
66 C304
67 TCM
68 TOD Resistor (Gasoline E/G)
69 G301
70 TOD or TCCU
71 FRT LH seat belt sw
72 Parking brake sw
73 W/D Burglar connector
74 Seat heater switch
75 STICS
76 G303
77 ECS
78 OVPR (Gasoline E/G)
79 C305
80 Seat belt sw (FRT RH)
81 EBCM (ADD)
82 G303
83 C205
84 Thermo amp
85 Passenger inflator
86 Vertical sensor
87 Lateral sensor
88 Front wiper motor
89 Siren
90 O2 sensor 1 / (Gasoline E/G)
91 EBCM (ABS) & Modulator (ABD)
92 J105
93 C113
94 C112
95 EGR solenoid (Diesel E/G)
96 C114 (Gasoline E/G)
97 C115 (Gasoline E/G)
98 J204 (Gasoline E/G)
99 S205
100 J205 (Gasoline E/G)
101 Antenna feeder cable
102 Auto antenna
103 C206
104 ECM (GSL) or Immobilizer unit (DSL)
105 EGR control unit (Diesel E/G)
106 G205
107 C361
108 O2 sensor 2 (Gasoline E/G)